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Fireproof repository

a fireproof container and repository technology, applied in the field of fireproof containers, can solve the problem of not being able to obtain a sufficiently acceptable fireproof container, and achieve the effect of preventing the quality deterioration of storing articles

Inactive Publication Date: 2003-01-30
HAYASHIBARA BIOCHEMICAL LAB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] In view of the foregoing background, the object of the present invention provides a fireproof container possessing both fire resistivity of preventing the quality deterioration of storing articles and advantageous transportability.
[0007] First, the present inventors confirmed in a preliminarily experiment that, as described above, the ability of acceptable inner temperature of 177.degree. C. or lower, which is of the fire-resistive container "for papers in general use" specified in JIS Fire-resistive container(s), is thoroughly insufficient for storing art products and the like, whose quality deterioration should be avoided, to meet the fire resistivity aimed at by the present invention. Then, the present inventors energetically studied to establish a fireproof container which far exceeds the above fire resistivity of conventional fireproof containers and has advantageous transportability.

Problems solved by technology

However, as far as the present inventors' tests with various combinations of materials generally used in conventional fireproof containers, no sufficiently acceptable fireproof container was obtained.

Method used

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Examples

Experimental program
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Effect test

example 1

Fireproof Container and its Fireproof Ability

example 1-1

Fireproof Container

[0040] As an embodiment of the fireproof container of the present invention, a fireproof container A, having the structure shown in typically with its longitudinal sectional view of FIG. 3, was prepared. As shown in FIG. 3, in a container portion 1 in the fireproof container A, an outer layer 1a is a layer, having 100 mm in thickness, made of "ISOWOOL.RTM. 1260 BOARD", a ceramic fire board as a fireproof insulation material commercialized by Isolite Insulating Products Co., Ltd., Tokyo, Japan; an inner layer 1b is a layer having 10 mm in thickness made of "ISOLITE C-1", an insulating firebrick as an incombustible material commercialized by Isolite Insulating Products Co., Ltd., Tokyo, Japan; and a middle layer 1c is an air layer, having 10 mm in thickness, provided via a spacer 1d made of the above insulating firebrick. A lid means 2 is composed of an inner lid, comprising a layer 2b having 10 mm in thickness, which is made of the above insulating firebrick corres...

example 1-2

Standard Heat Test

[0044] The fireproof containers A, B and C in the above example and the containers X.sub.1 and X.sub.2 as controls were subjected to the 1-hour standard heat test specified in "JIS Fire-resistive container(s)" to examine the inner temperature change of their container portions. The results are in FIG. 6. In FIG. 6, the curves A, B and C are respectively the inner temperature changes for the fireproof containers A, B and C; and the curves X.sub.1 and X.sub.2 are respectively those for the container portions X.sub.1 and X.sub.2. In this test, a box of Paulownia wood as a model of storing article was placed in each container portion and, after completion of the test, the condition of the boxes were macroscopically observed.

[0045] As shown in FIG. 6, the peak of inner temperature of the fireproof container A was about 160.degree. C., and those of the fireproof containers B and C were respectively about 130.degree. C. and about 120.degree. C. With regard to the conditio...

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Abstract

The object of the present invention is to provide a fireproof container which prevents the quality deterioration of articles to be stored when exposed to a relatively high temperature condition and which has a satisfactory transportability; the above object is solved by providing a fireproof container characterized in that it comprises a container portion having partially an opening part and a lid means capable of sealing the opening part to keep the inner space of the container portion in a sealed condition and optionally capable of making the inner space into an open condition, where the container portion comprises a multilayer structure of three outer-, middle- and inner-layers positioning in this order from the outside to the inside of the container portion, wherein in the multilayer structure the outer layer comprises a fire-resistant insulating material having a bulk specific gravity of not higher than 1.0 g / cm3, the middle layer comprises a material having an air-spaced layer and / or endothermic property, and the inner layer comprises a incombustibility material having a bulk specific gravity of not higher than 2.0 g / cm3.

Description

[0001] The present invention relates to a novel fireproof container, more particularly, a fireproof container having a satisfactory fire resistivity that inhibits quality deterioration of articles to be stored (designated as "storing articles", hereinafter) even when exposed to a relatively high temperature condition.[0002] In fireproof containers such as conventional fire-resistant containers, the heat capacity (multiplication of specific heat and mass) of walls of the fireproof containers is gained by using, as materials for the walls, a quantity of materials with a relatively large mass and specific heat such as concrete. Because of this, the gross weight of the fireproof containers becomes too high. Independently of business and household uses and if only the desired fireproof ability will be attainable, such an increased gross weight tends to be rather acceptable for fireproof containers, which are to be used for storing valuable articles such as money, valuable metals, and sec...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E05G1/024
CPCY10T428/1334E05G1/024
Inventor SAKAMOTO, KURARAARIO, TAKESHIMIYAKE, TOSHIO
Owner HAYASHIBARA BIOCHEMICAL LAB INC
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